Director: Mimi Leder
Long before she became a household name on the U.S. Supreme Court, Ruth Bader Ginsburg had to win a case nobody thought a woman could argue — and On the Basis of Sex builds its entire drama around that uphill fight.
What is On the Basis of Sex about?
The film opens on Ginsburg as one of the only women in her Harvard Law class, already facing skepticism that has nothing to do with her abilities and everything to do with her gender. Years later, stuck teaching rather than practicing because firms will not hire her, she finds an unlikely opening: a tax case involving a man denied a caregiver deduction simply because he is male, a scenario that lets her attack sex discrimination law from an angle courts had never been forced to consider. The film tracks the meticulous legal groundwork behind that case alongside the personal cost of pursuing it — strain on her marriage, doubts from colleagues, and the sheer improbability of convincing a conservative appellate bench that discrimination cuts both ways. Rather than dramatizing her later Supreme Court decades, the film narrows its focus to this single, carefully chosen battle, treating the courtroom scenes with the same precision Ginsburg herself was known for.
Cast & crew
Felicity Jones plays Ginsburg with a controlled intensity that favors legal precision over speechmaking, while Armie Hammer, as her husband Martin, provides the film's warmest counterweight. Justin Theroux, Sam Waterston, and Kathy Bates round out a supporting cast that keeps the courtroom and academic scenes grounded, under Mimi Leder's direction, which favors procedural clarity over melodrama.
Context & significance
As a biographical drama, the film sits alongside a wave of legal and historical biopics that reconstruct a single pivotal case rather than an entire career, using one courtroom argument to illuminate a much larger legal shift. Its focus on tax law and gender discrimination statutes gives it a more procedural backbone than typical biographical dramas, appealing to viewers interested in how legal precedent actually gets built.
Where & how to watch
On the Basis of Sex is available on K-Time with Persian dubbing and Persian subtitles, so Farsi-speaking viewers can follow the legal detail in either language. A free K-Time account is all that is required to start watching; this page can be read in full without logging in first.